Bottle and like closing device



E. BURNET.

BOTTLE AND LIKE CLOSING DEVICE.

APPLICATION FILED FEB. 6,1922.

Patented Det. LD, T922.

LASLS'YL zaefzor Zd aard Bar/26%' Patented Oct. l0, 1922.

EDWARD BURNET, 0F LONDON, ENGLAND.

BOTTL AN D LIKE CDOSING DEVICE.

Application led February 6, 1922. Serial No. stief To allwlwm z't mayconcern: l

Be it known that I, EDWARD BURNET, a subject of the Kin 'of GreatBritain, residing in London, `ngland, have invented certain new anduseful Improvements in Bottles and like Closing Devices, ofv which thefollowing is a specification.

My invention relates to improvements in bottle and like closing devicesthat form substantially air and Huid-tight closures, and comprises ametallic cover or cap containing an elastic packing or washer that ispresse-d and` retained against the mouth on the neck of` the bottle orother receptacle. It has for its object to provide a clos ing device o rstopper that will ermit of the withdrawalof the contents o a bottlewithout removal of the stopper, which is neat in appearance andhygienic.

The cover or cap of the improved stopper consists .of an end disc ofaluminium or other suitable metal, having a central aperture and adepending flange or skirt, the diameters of the a erture in the end ortop of the cap an of the lumien of the bottle neck being preferably madethe same. Interposed between the inner or lower face of the top ofthepcap andthe mouth of the bottle is a packing` piece or washer whichconsists of a comparatively thick disc of spongiose rubber between twothin lay'- ers of ordinary impermeable rubber. The washer and cap of thestopper may either remain separate or unattached, or the washer may besecured tothe inside of the vcap by means of an appropriate adhesiveagent.

When a stopper is placed on theqnouth of the bottle it is kept pressedtightly against it while its skirt 1s made to fit around the neck of thebottle by applying pressure` by means of any suitable appliance, to theWall of the skirt. Alternatively, the skirt may be formed with ascrewthread for engagement with a corresponding thread moulded on thebottle neck.

The improved stopper Ais particularly suited for use with bottlescontainin vaccine, which can be extracted fromA inside the bottle bypuncturing, with the needle of a h podermic syringe, the' portion of thewas ier exposed within the a erture of the cap, the spongiose disc facetom with ordinary rubber ensuring that all punctures will beSeli-closing on the withdrawal of the needle.

The invention will be further described with reference to theaccompanyin drawings, in which Fig. 1 is a section o a portion of abottle, drawn to an enlarged scale and havin preferred` orm apphed toit. Fig. 2 is a similar view showing the stopper in another form andscrewed on the neck of the bottle, and Fig. 3 is a 'section showing thecap and the associated washer before it is compressed by pressing thecap on to the neck of the, bott e. In the several ligures correspondingparts are indicated bythe same letters.

In the drawings a denotes the upper lportion of a bottle, bis a metalliccover or cap having a central aperture b and a flange or skirt' b2.Nested in the anged cap is an elastic packing or washer consisting, asdepicted in F ig. 3, of a layerI yor disc of spongiose rubber cinterposed between two discs c, c2 of ordinary impermeable rubber.

top and botthe improved stopper in its' In Fig. 1 the lower edge b3 ofthe skirt b2 has been bent by Spinnin and made to lit under the lip orrim a o the bttle.

In Fig. 2 the skirt b4 is formed with a screwthread and is engaged with?screwthreads a? on the bottle neck.

.Having thus described the nature of the said invention and the bestmeans I know of carrying the same into practical eiect, I

claim 1. A bottle stopper comprising in combination a metallic capconsisting of a flat top portion having a central aperture andadepending skirt .embracin the' bottle neck, and an elastic washer ousedwithin the cap and interposed between the neck of the bottle and theunderside of the cap top, said washer consisting of an upper and a lowerdisc of impermeable rubber and a disc of spongiose rubber interposedbetween the said upper and Alower discs.

2. AA bottle 'stopper comprising in combination a metallic capconsistingof a fiat top portion h'wing a central aperture and a epending skirt embracing thehbottle neck, and an elasticwasher housedwithin the cap and inter osed between the neck of the bottle an theunder side of the cap top, said washer consisting `of an upper and alower disc of impermeable rubber and o EDWARD BURNET.

